Survival of indicator/pathogenic bacteria in orange soft drink
1998
Massa, S. | Facciolongo, M. | Rabasco, E. | Caruso, M.
Experiments were undertaken to determine the survival of indicator and pathogenic bacteria in samples of a popular orange soft drink having pH 3.0 and held at 8 degrees C. The fizzy orange drink was inoculated with c. 10(6) cell ml-1 of Escherichia coli (two strains, EAC1 and EAC75) and c. 10(6) cell ml-1 of Salmonella derby (two strains) and Listeria monocytogenes (one strain). None of the strains of S. derby and L. monocytogenes was detected 35 h after inoculation. Numbers of the E. coli decreased, reaching a final concentration of 1.1 X 10(2) CFU ml-1 and 1.3 X 10(3) CFU ml-1 for strain EAC1 and strain EAC75, respectively. These results indicate the safety of this type of soft drink with respect to these organisms.
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